What is the purpose of this double cranked link?

A double cranked link (No. 30) lets you add an odd number of pitches to a chain. It consists of an inner link combined with cranked plates permanently retained by a riveted bearing pin.

Which chains are compatible with this link?

This link is designed for Renold Synergy 08B-2 duplex roller chains built to BS/DIN standards with a 1/2" pitch (12.7 mm).

What is the breaking load of this connecting link?

This duplex connecting link has a breaking load of 31100 N.

What are the primary dimensions of this link?

It features a pitch of 12.7 mm (1/2"), a roller diameter of 8.51 mm, a pin diameter of 4.45 mm, and an inside width of 7.75 mm.

RENOLD GY08B2S30I reducer SYNERGY 08b-2 - duplex 1/2 inch

Name: RENOLD GY08B2S30I reducer SYNERGY 08b-2 - duplex 1/2 inch
Brand: RENOLD
SKU: 03050075
Price: 40.2 EUR
Availability: InStock

Supplier number: RENOLD GY08B2S30I | EAN 6623900986447

40.20 tax incl.

€33.22 excl. VAT (incl. all environmental contributions)

On stock - immediately available

Ordered before 20:00 - delivered tomorrow 09/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

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Dependable chain extension by Renold

Practical benefits

Accurate duplex fit: Engineered with a 12.7 mm pitch to fit your 08B-2 roller chain seamlessly.
High tensile strength: Built with a breaking strength of 31100 N to handle heavy-duty industrial drive loads.
Secure riveted build: The permanently riveted bearing pin keeps the cranked plates locked in position under tension.

In a nutshell

The right choise for

With the Renold Synergy 08B-2 double cranked link, you can adjust your duplex drive chain quickly and accurately whenever an odd number of pitches is required. Thanks to the precise 12.7 mm pitch, this duplex link integrates seamlessly into your 08B-2 roller chain. Its robust build featuring a riveted bearing pin and a breaking load of 31100 n ensures dependable power transmission under demanding industrial operating loads. This allows you to repair or shorten chain strands in conveyor systems and heavy machinery without replacing the entire chain.

Product information FAQ

€40.20

In stock - tax incl.

Key features according to our expert

Pitch: 1/2 inch; 12,7 mm
Thickness (inner plate): 1,55 mm
Product line: Renold Synergy
Number of the connecting link: 30
Weight (kg/m): 1,38 kg/m
Length (pin): 30,4 mm
Height: 2
Thickness (outer plate): 1,55 mm
Plate height: 11,7 mm
Type (ISO/ANSI): 08B-2
Version (link): Duplex
Diameter (pin): 4,45 mm
Diameter (roller): 8,51 mm
Breaking strength: 31100 N
Inside width: 7,75 mm

Product description:

Renold Synergy - Made to be better:

The Renold Synergy has an outstanding reputation as the only, true high-performance roller chain on the market.
This reputation is based not only on the years of research and testing that preceded its design, but also on the feedback from engineers around the world who have experienced and endorse the wear resistance, fatigue resistance and exceptional longevity of the Renold Synergy themselves.

Improved fatigue resistance:

The design of blade and connector optimises pressure distribution and fatigue performance.
The Renold Synergy performs, on average, 30 per cent better than other brands under repeated shock loads and continuous heavy loads.
Fatigue Comp

Better wear resistance:

Independent tests show that the Renold Synergy performs up to six times better than the competition's highest performance chain.

Made to perform:

Every part of Renold Synergy precisely engineered using state-of-the-art development methods such as Finite Element Analysis (FEA). It all contributes to chain performance that is more than the sum of its parts.

Wide range of sizes:

Renold Synergy chain is available in British Standard dimensions from 06B to 24B in simplex, duplex and triplex construction. In addition, ANSI Standard sizes are available from 35 to 160 in simplex, duplex and triplex construction.

Scale shape:

High blade profile for improved stress distribution; maximised blade thickness within the limitations of the standard.

Bushings:

Solid extruded bushings deliver improved roundness and strength compared to rolled bushings. Chamfered ends improve the bearing section and extend service life.

Hole quality:

'Triple punch holing' techniques ensure correct pin and bushing position for even wear.

Fixed fit:

Optimised to ensure maximum service life.

Fatigue resistance:

Prestressed surfaces increase fatigue resistance.

Wear resistance:

Chamfered parts and special surface coating of the pin increase wear resistance.

Connecting link:

Has a unique design that ensures that all parts of the chain system are equally strong.

All Features

Pitch: 1/2 inch; 12,7 mm
Thickness (inner plate): 1,55 mm
Product line: Renold Synergy
Number of the connecting link: 30
Weight (kg/m): 1,38 kg/m
Length (pin): 30,4 mm
Height: 2
Thickness (outer plate): 1,55 mm
Plate height: 11,7 mm
Type (iso/ansi): 08B-2
Version (link): Duplex
Diameter (pin): 4,45 mm
Diameter (roller): 8,51 mm
Breaking strength: 31100 N
Inside width: 7,75 mm

Brand RENOLD
03050075
EAN 6623900986447
Supplier number RENOLD GY08B2S30I

Frequently asked questions about this product

Answered by specialists

What is the purpose of this double cranked link?: A double cranked link (No. 30) lets you add an odd number of pitches to a chain. It consists of an inner link combined with cranked plates permanently retained by a riveted bearing pin.
Which chains are compatible with this link?: This link is designed for Renold Synergy 08B-2 duplex roller chains built to BS/DIN standards with a 1/2" pitch (12.7 mm).
What is the breaking load of this connecting link?: This duplex connecting link has a breaking load of 31100 N.
What are the primary dimensions of this link?: It features a pitch of 12.7 mm (1/2"), a roller diameter of 8.51 mm, a pin diameter of 4.45 mm, and an inside width of 7.75 mm.